56 



Tlie cheapest butter was made by a Jersey heifer with 

 her first calf, the food to make one pound of butter cost- 

 ing in this case only 6.4 cents when cotton seed was fed 

 and 11.2 cents when cotton seed meal was given. 



The manure (liquid and solid) dropped during the 

 16 hours of each day which the cows passed in the barn 

 was carefully saved, analyzed, and applied to various 

 <irops. 



The amount of manure, including sawdust bedding, 

 per cow per night (of 16 hours) averaged 33.9 pounds 

 when cotton seed was fed and 48.3 pounds when cotton 

 seed meal was fed. 



The manure made from the cotton seed and sorghum 

 hay ration contained 10.7 pounds of nitrogen per ton; 

 that from cotton seed meal and hulls contained 16.6 

 pounds, an increase of 55 per cent, in the amount of nit- 

 rogen per ton. 



In percentages of phosphoric acid and potash the two 

 manures were practically identical. 



For one or two days the cows were kept stabled dur- 

 ing the entire 24 hours and the amount of manure thus 

 obtained (exclusive of bedding) was about double the 

 amount secured by stabling the cows for 16 hours per 

 day. 



About one-half the manure was dropped out of doors. 



Green rye at the rate of 52 to 54 pounds per day 

 proved a satisfactory substitute for either sorghum hay 

 or cotton seed hulls. 



While the cows ate green rye the amount of milk 

 slightly increased but the milk was slightly poorer than 

 during the preceding period when only dry food was 

 consumed. 



An upland corn field from which the ears had been 

 harvested, and in which cowpeas had been drilled be- 

 tween the corn rows, was grazed first by milk cows and 



